<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *,
        *:before,
        *:after {
            box-sizing: border-box;
        }

        html,
        body {
            width: 100%;
            height: 100%;
        }

        body {
            display: flex;
            align-items: center;
            justify-content: center;
            transform: translate3d(0, 0, 0);
            background: #f2f2f2;
        }

        ul {
            position: relative;
            transform: rotate(-35deg) skew(20deg, 5deg);
            list-style: none;
        }

        .list-item {
            background: #000;
            color: #575757;
            text-align: center;
            height: 2.5em;
            width: 4em;
            line-height: 2.5em;
            border-bottom: 1px solid #060606;
            position: relative;
            display: block;
            text-decoration: none;
            box-shadow: -2em 1.5em 0 #e1e1e1;
            transition: all .25s linear;

            &:hover {
                background: #ff6e42;
                color: #fffcfb;
                transform: translate(.9em, -.9em);
                transition: all .25s linear;
                box-shadow: -2em 2em 0 #e1e1e1;

                &:before,
                &:after {
                    transition: all .25s linear;
                }

                &:before {
                    background: #b65234;
                    width: 1em;
                    top: .5em;
                    left: -1em;
                }

                &:after {
                    background: #b65234;
                    width: 1em;
                    bottom: -2.5em;
                    left: 1em;
                    height: 4em;
                }
            }

            &:before,
            &:after {
                content: '';
                position: absolute;
                transition: all .25s linear;
                width: .5em;
            }

            &:after {
                height: 4em;
                background: #181818;
                bottom: -2.25em;
                left: 1.5em;
                transform: rotate(90deg) skew(0, 45deg);
            }

            &:before {
                height: 2.5em;
                background: #121212;
                top: .25em;
                left: -.5em;
                transform: skewY(-45deg);
            }
        }
    </style>
</head>

<body>
    <ul>
        <li>
            <a class='list-item' href=''>
                <i class='icon-reorder'></i>
            </a>
        </li>
        <li>
            <a class='list-item' href=''>
                <i class='icon-th-large'></i>
            </a>
        </li>
        <li>
            <a class='list-item' href=''>
                <i class='icon-bar-chart'></i>
            </a>
        </li>
        <li>
            <a class='list-item' href=''>
                <i class='icon-tasks'></i>
            </a>
        </li>
        <li>
            <a class='list-item' href=''>
                <i class='icon-bell'></i>
            </a>
        </li>
        <li>
            <a class='list-item' href=''>
                <i class='icon-archive'></i>
            </a>
        </li>
        <li>
            <a class='list-item' href=''>
                <i class='icon-comment'></i>
            </a>
        </li>
        <li>
            <a class='list-item' href=''>
                <i class='icon-sitemap'></i>
            </a>
        </li>
        <li>
            <a class='list-item' href=''>
                <i class='icon-thumbs-up'></i>
            </a>
        </li>
        <li>
            <a class='list-item' href=''>
                <i class='icon-tumblr'></i>
            </a>
        </li>
    </ul>

</body>

</html>